What sank the USS San Diego? A WWI naval mystery may be solved.

[6thGuards]

"It’s one of the mysteries of U.S. naval history. What sunk the armored cruiser San Diego, just 10 miles off the New York coastline during World War I?

A surprise explosion rocked the ship that July morning, 99 years ago. Within 30 minutes, the 500-foot warship capsized in about 100 feet of water, taking six sailors to a watery grave."

http://www.sandiegouniontribune.com/military/sd-me-usssandiego-exploration-20170913-story.html

[Raven114]

U-Boat?

[RipNuN2]

Looks like we have to wait till next summer for them to release the findings of the survey.

[SomemuttupNorth]

The most agreed theory is she struck a mine, which was laid by U-156. Officially, U-156 is crediting for sinking the ship.